Embed the translation files in the binary

If a translation file exists in a "translations" directory located in
the same directory as the binary, it is used in priority (this can be
useful when working on translations as you don't have to recompile the
whole program all the time), and if no such file is found the embedded
translation file is used (if it exists).

1 files changed, 30 insertions, 13 deletions

diff --git a/src/common/i18n.cpp b/src/common/i18n.cpp
index 4a76e76fc..28a186bf0 100644
--- a/src/common/i18n.cpp
+++ b/src/common/i18n.cpp
@@ -35,6 +35,7 @@
 #include "file_io_utils.h"
 #include "common/util.h"
 #include "common/i18n.h"
+#include "translation_files.h"
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "i18n"
@@ -62,6 +63,7 @@ std::string i18n_get_language()
     e = "en";
 
   std::string language = e;
+  language = language.substr(0, language.find("."));
   std::transform(language.begin(), language.end(), language.begin(), tolower);
   return language;
 }
@@ -137,25 +139,40 @@ int i18n_set_language(const char *directory, const char *base, std::string langu
   i18n_log("Loading translations for language " << language);
 
   boost::system::error_code ignored_ec;
-  if (!boost::filesystem::exists(filename, ignored_ec)) {
+  if (boost::filesystem::exists(filename, ignored_ec)) {
+    if (!epee::file_io_utils::load_file_to_string(filename, contents)) {
+      i18n_log("Failed to load translations file: " << filename);
+      return -1;
+    }
+  } else {
     i18n_log("Translations file not found: " << filename);
-    const char *underscore = strchr(language.c_str(), '_');
-    if (underscore) {
-      std::string fallback_language = std::string(language, 0, underscore - language.c_str());
-      filename = std::string(directory) + "/" + base + "_" + fallback_language + ".qm";
-      i18n_log("Not found, loading translations for language " << fallback_language);
-      if (!boost::filesystem::exists(filename, ignored_ec)) {
-        i18n_log("Translations file not found: " << filename);
+    filename = std::string(base) + "_" + language + ".qm";
+    if (!find_embedded_file(filename, contents)) {
+      i18n_log("Embedded translations file not found: " << filename);
+      const char *underscore = strchr(language.c_str(), '_');
+      if (underscore) {
+        std::string fallback_language = std::string(language, 0, underscore - language.c_str());
+        filename = std::string(directory) + "/" + base + "_" + fallback_language + ".qm";
+        i18n_log("Loading translations for language " << fallback_language);
+        if (boost::filesystem::exists(filename, ignored_ec)) {
+          if (!epee::file_io_utils::load_file_to_string(filename, contents)) {
+            i18n_log("Failed to load translations file: " << filename);
+            return -1;
+          }
+        } else {
+          i18n_log("Translations file not found: " << filename);
+          filename = std::string(base) + "_" + fallback_language + ".qm";
+          if (!find_embedded_file(filename, contents)) {
+            i18n_log("Embedded translations file not found: " << filename);
+            return -1;
+          }
+        }
+      } else {
         return -1;
       }
     }
   }
 
-  if (!epee::file_io_utils::load_file_to_string(filename, contents)) {
-    i18n_log("Failed to load translations file: " << filename);
-    return -1;
-  }
-
   data = (const unsigned char*)contents.c_str();
   datalen = contents.size();
   idx = 0;